org.waarp.common.json

Class JsonHandler

java.lang.Object

org.waarp.common.json.JsonHandler

Direct Known Subclasses:

SmileJsonHandler

public class JsonHandler
extends Object

Abstract Json Handler

Author:

"Frederic Bregier"

Field Summary

Fields

Modifier and Type	Field and Description
static com.fasterxml.jackson.databind.ObjectMapper	mapper JSON parser

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JsonHandler()

Method Summary

Methods

Modifier and Type	Method and Description
static com.fasterxml.jackson.databind.node.ArrayNode	createArrayNode()
static com.fasterxml.jackson.databind.node.ObjectNode	createObjectNode()
static boolean	exist(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?>... field)
static boolean	exist(com.fasterxml.jackson.databind.node.ObjectNode node, String... field)
static com.fasterxml.jackson.databind.node.ObjectNode	getFromFile(File file)
static Object	getFromFile(File file, Class<?> clasz)
static com.fasterxml.jackson.databind.node.ObjectNode	getFromString(String value) Parses a string representation of a JSON object and returns an ObjectNode, swallowing any processing exception.
static <T> T	getFromString(String value, Class<T> clasz)
static com.fasterxml.jackson.databind.node.ObjectNode	getFromStringExc(String value) Parses a string representation of a JSON object and returns an ObjectNode.
static Map<String,Object>	getMapFromString(String value)
static String	getString(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field)
static String	getString(com.fasterxml.jackson.databind.node.ObjectNode node, String field)
static Boolean	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, boolean defValue)
static byte[]	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, byte[] defValue)
static Double	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, double defValue)
static Integer	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, int defValue)
static Long	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, long defValue)
static String	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, String defValue)
static Boolean	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, boolean defValue)
static byte[]	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, byte[] defValue)
static Double	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, double defValue)
static Integer	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, int defValue)
static Long	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, long defValue)
static String	getValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, String defValue)
static String	prettyPrint(Object object)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, boolean value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, byte[] value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, double value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, int value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, long value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, Enum<?> field, String value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, boolean value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, byte[] value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, double value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, int value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, long value)
static void	setValue(com.fasterxml.jackson.databind.node.ObjectNode node, String field, String value)
static boolean	writeAsFile(Object object, File file)
static String	writeAsString(Object object)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mapper

public static final com.fasterxml.jackson.databind.ObjectMapper mapper

JSON parser

Constructor Detail

JsonHandler

protected JsonHandler()

Method Detail

createObjectNode

public static com.fasterxml.jackson.databind.node.ObjectNode createObjectNode()

Returns:

an empty ObjectNode

createArrayNode

public static com.fasterxml.jackson.databind.node.ArrayNode createArrayNode()

Returns:

an empty ArrayNode

getFromStringExc

public static com.fasterxml.jackson.databind.node.ObjectNode getFromStringExc(String value)
                                                                       throws com.fasterxml.jackson.core.JsonProcessingException

Parses a string representation of a JSON object and returns an ObjectNode. JSON Processing exceptions are kept.

Parameters:

value -

Returns:

the objectNode or null if an error occurs

Throws:

com.fasterxml.jackson.core.JsonProcessingException

getFromString

public static com.fasterxml.jackson.databind.node.ObjectNode getFromString(String value)

Parses a string representation of a JSON object and returns an ObjectNode, swallowing any processing exception.

Parameters:

value -

Returns:

the objectNode or null if an error occurs

getFromFile

public static final com.fasterxml.jackson.databind.node.ObjectNode getFromFile(File file)

Parameters:

file -

Returns:

the jsonNode (ObjectNode or ArrayNode)

Throws:

InvalidParseOperationException

getFromString

public static final <T> T getFromString(String value,
                  Class<T> clasz)

Parameters:

value -

clasz -

Returns:

the object of type clasz

Throws:

InvalidParseOperationException

getFromFile

public static final Object getFromFile(File file,
                 Class<?> clasz)

Parameters:

file -

clasz -

Returns:

the corresponding object

Throws:

InvalidParseOperationException

writeAsString

public static String writeAsString(Object object)

Parameters:

object -

Returns:

the Json representation of the object

writeAsFile

public static final boolean writeAsFile(Object object,
                  File file)

Parameters:

object -

file -

Returns:

True if correctly written

Throws:

InvalidParseOperationException

prettyPrint

public static String prettyPrint(Object object)

Parameters:

object -

Returns:

the Json representation of the object in Pretty Print format

getString

public static final String getString(com.fasterxml.jackson.databind.node.ObjectNode node,
               String field)

Parameters:

node -

field -

Returns:

the String if the field exists, else null

getString

public static final String getString(com.fasterxml.jackson.databind.node.ObjectNode node,
               Enum<?> field)

Parameters:

node -

field -

Returns:

the String if the field exists, else null

getValue

public static final String getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
              String field,
              String defValue)

Parameters:

node -

field -

defValue -

Returns:

the String if the field exists, else defValue

getValue

public static final Boolean getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
               String field,
               boolean defValue)

Parameters:

node -

field -

defValue -

Returns:

the Boolean if the field exists, else defValue

getValue

public static final Double getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
              String field,
              double defValue)

Parameters:

node -

field -

defValue -

Returns:

the Double if the field exists, else defValue

getValue

public static final Long getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            String field,
            long defValue)

Parameters:

node -

field -

defValue -

Returns:

the Long if the field exists, else defValue

getValue

public static final Integer getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
               String field,
               int defValue)

Parameters:

node -

field -

defValue -

Returns:

the Integer if the field exists, else defValue

getValue

public static final byte[] getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
              String field,
              byte[] defValue)

Parameters:

node -

field -

defValue -

Returns:

the byte array if the field exists, else defValue

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            String field,
            boolean value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            String field,
            double value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            String field,
            int value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            String field,
            long value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            String field,
            String value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            String field,
            byte[] value)

Parameters:

node -

field -

value -

exist

public static final boolean exist(com.fasterxml.jackson.databind.node.ObjectNode node,
            String... field)

Parameters:

node -

field -

Returns:

True if all fields exist

getValue

public static final String getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
              Enum<?> field,
              String defValue)

Parameters:

node -

field -

defValue -

Returns:

the String if the field exists, else defValue

getValue

public static final Boolean getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
               Enum<?> field,
               boolean defValue)

Parameters:

node -

field -

defValue -

Returns:

the Boolean if the field exists, else defValue

getValue

public static final Double getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
              Enum<?> field,
              double defValue)

Parameters:

node -

field -

defValue -

Returns:

the Double if the field exists, else defValue

getValue

public static final Long getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            Enum<?> field,
            long defValue)

Parameters:

node -

field -

defValue -

Returns:

the Long if the field exists, else defValue

getValue

public static final Integer getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
               Enum<?> field,
               int defValue)

Parameters:

node -

field -

defValue -

Returns:

the Integer if the field exists, else defValue

getValue

public static final byte[] getValue(com.fasterxml.jackson.databind.node.ObjectNode node,
              Enum<?> field,
              byte[] defValue)

Parameters:

node -

field -

defValue -

Returns:

the byte array if the field exists, else defValue

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            Enum<?> field,
            boolean value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            Enum<?> field,
            double value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            Enum<?> field,
            int value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            Enum<?> field,
            long value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            Enum<?> field,
            String value)

Parameters:

node -

field -

value -

setValue

public static final void setValue(com.fasterxml.jackson.databind.node.ObjectNode node,
            Enum<?> field,
            byte[] value)

Parameters:

node -

field -

value -

exist

public static final boolean exist(com.fasterxml.jackson.databind.node.ObjectNode node,
            Enum<?>... field)

Parameters:

node -

field -

Returns:

True if all fields exist

getMapFromString

public static Map<String,Object> getMapFromString(String value)

Parameters:

value -

Returns:

the corresponding HashMap